Breast elastography: Identification of benign and malignant cancer based on absolute elastic modulus measurement using vibro-elastography

Junior Arroyo, Ana Cecilia Saavedra, Jorge Guerrero, Pilar Montenegro, Jorge Aguilar, Joseph A. Pinto, Julio Lobo, Tim Salcudean, Roberto Lavarello, Benjamín Castañeda

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

2 Citas (Scopus)

Resumen

Breast cancer is a public health problem with ∼ 1.7 million new cases per year worldwide and with several limitations in the state-of-art screening techniques. Ultrasound elastography involves a set of techniques intended to facilitate the noninvasive diagnosis of cancer. Among these, Vibro-elastography is an ultrasound-based technique that employs external mechanical excitation to infer the elastic properties of soft tissue. In this paper, we evaluate the Vibro-elastography performance in the differentiation of benign and malignant breast lesions. For this study, a group of 18 women with clinically confirmed tumors or suspected malignant breast lesions were invited to participate. For each volunteer, an elastogram was obtained, and the mean elasticity of the lesion and the adjacent healthy tissue were calculated. After the acquisition, the volunteers underwent core-needle biopsy. The histopathological results allowed to validate the Vibro-elastography diagnosis, which ranged from benign to malignant lesions. Results indicate that the mean elasticity value of the benign lesions, malignant lesions and healthy breast tissue were 39.4 ± 12 KPa, 55.4 ± 7.02 KPa and 23.91 ± 4.57 kPa, respectively. The classification between benign and malignant breast cancer was performed using Support Vector Machine based on the measured lesion stiffness. A ROC curve permitted to quantify the accuracy of the differentiation and to define a suitable cutoff value of stiffness, obtaining an AUC of 0.90 and a cutoff value of 44.75 KPa. The results obtained suggest that Vibro-elastography allows differentiating between benign and malignant lesions. Furthermore, the elasticity values obtained for benign, malignant and healthy tissue are consistent with previous reports.

Idioma originalInglés
Título de la publicación alojadaMedical Imaging 2018
Subtítulo de la publicación alojadaImage Perception, Observer Performance, and Technology Assessment
EditoresFrank W. Samuelson, Robert M. Nishikawa
EditorialSPIE
ISBN (versión digital)9781510616431
DOI
EstadoPublicada - 2018
EventoMedical Imaging 2018: Image Perception, Observer Performance, and Technology Assessment - Houston, Estados Unidos
Duración: 11 feb. 201812 feb. 2018

Serie de la publicación

NombreProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volumen10577
ISSN (versión impresa)1605-7422

Conferencia

ConferenciaMedical Imaging 2018: Image Perception, Observer Performance, and Technology Assessment
País/TerritorioEstados Unidos
CiudadHouston
Período11/02/1812/02/18

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